A.suchB.manyC.theD.more
A.such
B.many
C.the
D.more
A.such
B.many
C.the
D.more
A、increases by the size of the tax.
B、doubles.
C、remains constant.
D、increases by a factor of four.
Economists try to address their subject with a scientist ’s objectivity. They approach the study of the economy in much the same way as a physicist approaches the study of matter and a biologist approaches the study of life: (2)They devise theories, collect data, and then analyze these data in an attempt to verify or refute their theories.
To beginners, it can seem odd to claim that economics is a science. After all, economists do not work with test tubes or telescopes. (3)The essence of science, however, is the scientific methods--the dispassionate development and testing of theories about how the world works.
This method of inquiry is as applicable to studying a nation ’s economy as it is to studying th earth’s gravity or a species ’ evolution. (4)As Albert Einstein once put it, “The whole of nothing more than the refinement of everyday thinking. ” (225words)
(1)__________________________________
(2)__________________________________
(3)__________________________________
(4)__________________________________
A、A. deadweight tons
B、B. displacement tons
C、C. net tons
D、D. gross tons
A. buoyancy
B. deadweight
C. draft
D. freeboard
Early on 5 November 1996,the 140,086 tonnes deadweight Malaysian flag bulk carrier Giga 2 was nearing completion of discharge of a cargo of iron ore at No.2 discharge berth,Port KemblA、Due to the vessel&39;s light condition,the unloader could not be positioned over No.1 hold,to remove the 1080 tonnes of cargo remaining in that particular hold.At the suggestion of the shift supervisor,ballast was pumped into No.4 hold,which was permissible under the vessel&39;s operations manual.Pumping of ballast into No.4 hold commenced at 0530.
After the lunch break,two terminal workers descended into No.5 hold,where the unloader was working,to clear iron ore from around the bottom of the forward spiral access ladder.The spiral ladder terminated at the top of the lower stool,six metres above the tank top.They had just completed this task and were about to climb the ladder when the bulkhead to the starboard side of the centre line,between No.5 hold and the ballasted No.4 hold,collapsed.Both workers were immediately engulfed by the deluge and,although one was able to haul himself clear,the other remained submerged.
The shift supervisor was working in his office ashore and,alerted by calls over the radio from the Hatchman,dashed on board and immediately descended the ladder into No.5 hold.Up to his neck in the swirling water and guided by the Hatchman above,he was able to grab hold of the submerged worker.Assisted by another terminal worker,who had followed him into the hold,he was able to haul the unconscious and apparently lifeless worker clear of the water.The shift supervisor then administered cardio-pulmonary resuscitation(CPR),which was successful in restoring breathing in the worker.Very shortly afterwards an ambulance officer arrived on the scene and administered oxygen,before the worker was lifted from the hold and taken to hospital.
问题:
The most probable reason that the unloader could not be positioned over No.1 hold was that ________.
A.the trim was too small
B.the trim was too big
C.the draft was too small
D.the draft was too big
No.4 hold into which ballast water was pumped was a ________.A.special hold which could only be used to adjust the trim and/or draft in cargo operation
B.double bottom tank usually not used as ballast tank
C.ballast tank
D.cargo hold
It is concluded that the depth of ballast water in No.4 Hold ________ before the bulkhead was collapsed.A.less than 1 meter
B.around 1 meter
C.around 2 meters
D.more than 3 meters
Of the following,it is ________ that prevented the submerged worker from hauling himself clear when the bulkhead collapsed.A.his weakness or,possibly,his small figure
B.the big depth of the ballast water
C.the big distance from the lower stool of the spiral ladder to the tank-top in No.5 Hold
D.the strong or swirling current in the ballast water
Every new crude oil tanker of 20000 tons deadweight and above shall be fitted with a cargo tank cleaning system using crude oil washing.The Administration shall undertake to ensure that the system fully complies with the requirements of MARPOL within one year after the tanker was first engaged in the trade of carrying crude oil or by the end of the third voyage carrying crude oil suitable for crude oil washing,whichever occurs later.Unless such oil tanker carries crude oil which is not suitable for crude oil washing,the oil tanker shall operate the system in accordance with the requirements of that Regulation.
Every existing crude oil tanker of 40000 tons deadweight and above shall be provided with segregated ballast tanks.Existing crude oil tankers may,in lieu of being provided with segregated ballast tanks,operate with a cargo tank cleaning procedure using crude oil washing unless the crude oil tanker is intended to carry crude oil which is not suitable for crude oil washing.
Existing crude oil tankers may,in lieu of being provided with segregated ballast tanks or operating with a cargo tank cleaning procedure using crude oil washing,operate with dedicated clean ballast tanks in accordance with the provision of Regulation 13A of this Annex for the following period:for crude oil tankers of 70 000 tons deadweight and above,until two years after the date of entry into force of the present Convention;and for crude oil tankers of 40000 tons deadweight and above but below 70 000 tons deadweight,until four years after the date of entry into force of the present Convention.
问题:
A new crude oil tanker of 30000 tons deadweight shall ________.
A.be fitted with crude oil washing system
B.operate dedicated clean ballast tanks
C.be fitted with segregated ballast tanks
D.be fitted with washing system other than crude oil washing system
Except________,the existing crude oil tankers may operate with any of the following installations.A.segregated ballast tanks
B.cargo tank cleaning procedure using crude oil washing
C.operate with dedicated clean ballast tanks
D.protection position
The latest date for an existing crude oil tanker of 60000 tons deadweight to install dedicated clean ballast tanks is ________.A.until two years after the date of entry into force of the present Convention
B.until four years after the date of entry into force of the present Convention
C.within one year after the tanker was first engaged in the trade of carrying crude oil
D.by the end of the third voyage carrying crude oil
It is inferred that ________.A.all oil tankers,both the newly built and existing ones,shall be fitted with a cargo tank cleaning system using crude oil washing
B.a new crude oil tanker of 20 000 tons deadweight and above may,in lieu of being provided with crude oil washing system,operate with segregated ballast tanks
C.a new crude oil tanker of 20 000 tons deadweight and above may,in lieu of being provided with crude oil washing system,operate with dedicated clean ballast tanks
D.a new crude oil tanker of 20 000 tons deadweight and above shall not be fitted with a cargo tank cleaning system using crude oil washing immediately after her entry in the trade of carrying crude oil
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